/*
 * Copyright 2007 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 */
package gchisto.gctrace;

import gchisto.utils.Locker;
import gchisto.utils.RefresherCallback;

/**
 *
 * @author tony
 */
public class RCWithGCTraceCheckpoint implements RefresherCallback {

    final private GCTraceCheckpoint checkpoint;
    final private Locker locker;
    final private RCWithGCTraceCheckpointCallback callback;

    public boolean shouldRefresh() {
        return checkpoint.needsCheckpoint();
    }

    public void beforeAddingTask() {
        locker.doWhileLocked(new Runnable() {

            public void run() {
                checkpoint.checkpoint();
            }
        });
    }

    public void refresh() {
        callback.refresh(checkpoint);
    }

    public RCWithGCTraceCheckpoint(
            GCTraceCheckpoint checkpoint,
            Locker locker,
            RCWithGCTraceCheckpointCallback callback) {
        this.checkpoint = checkpoint;
        this.locker = locker;
        this.callback = callback;
    }
}
